Bottle, method of making the same and use of FDCA and diol monomers in such bottle

ABSTRACT

The invention concerns a bottle ( 1 ) molded from at least one thermoplastic polymer of at least one Furan Dicarboxylic Acid (FDCA) monomer, preferably 2,5-Furan Dicarboxylic Acid (2,5-FDCA) monomer, and at least one diol monomer, preferably Monoethyleneglycol (MEG) monomer, said bottle, having a main axis (X), being provided with a body ( 5 ) and a bottom base ( 6 ) extending from a lower end of the body ( 5 ). The bottom base ( 6 ) comprises:—a peripheral seat ( 7 ) defining a laying plane ( 8 );—a concave arch ( 10 ) which extends from the periphery of a central zone ( 11 ) of the bottom base ( 6 ) to the peripheral seat ( 7 ), said concave arch ( 10 ) having a rounded general shape with a concavity turned towards the outside of the container ( 1 ) and the middle point of the central zone ( 11 ) being named push-up ( 11   a );—a series of reinforcing grooves ( 13 ) which extend radially from the central zone ( 11 ) to at least the peripheral seat ( 7 );—base feet ( 14 ) located between two adjacent reinforcing grooves ( 13 ); According to the invention, the bottle bottom base ( 6 ) comprises an offset sitting radius, defined as the distance between the maximum bottle diameter and the contact point of the base feet with the laying plan ( 8 ) that is in the range of 5 to 10 mm for a bottle having a diameter (D) between 40 and 150 mm.

CROSS REFERENCE TO RELATED APPLICATIONS

The present application is a National Stage of International ApplicationNo. PCT/EP2018/084376, filed on Dec. 11, 2018, which claims priority toEuropean Patent Application No. 17207630.9, filed on Dec. 15, 2017, theentire contents of which are being incorporated herein by reference

FIELD OF THE INVENTION

The invention relates to a bottle having a bottom base, to a method ofmaking the same and to a use of FDCA and diol monomers in such bottleand bottle bottom base.

BACKGROUND

PolyEthylene Terephthalate and its co-polyesters (hereinafter referredto collectively as “PET” or “PolyEthylene Terephthalate”) are widelyused as raw material for making packaging articles in part due to theirexcellent combination of clarity, mechanical, and gas barrierproperties. Examples of PET products include, but are not limited to,bottles and containers for packaging food and beverage products but alsodetergent, cosmetics or pharmaceutical products. PET is also widely usedin the fiber industry.

Depending on its processing and thermal history, PET may exist both asan amorphous (transparent) and as a semi-crystalline polymer. The semicrystalline material might appear transparent (particle size less than500 nm) or opaque and white (particle size up to a few micrometers)depending on its crystal structure and particle size.

The wide use of PET in the blow molding industry and more specificallyin the water bottle industry has led to the development of specificprocesses: injection molding of preforms, preforms heating process,stretch blow molding, liquid bi-orientation . . . . Complementary to theprocesses, specific devices have been developed, for example, injectionmolding molds, heating devices, sliding rod for stretching the preform .. . .

Today, most commercial methods produce PET with petro-chemically derivedraw materials. However, there is a high demand for polymers based onrenewable raw materials, that can be efficiently bio-sourced and thatare cost effective to compete PET.

In PET thermoplastic containers and bottles, the design of the bottlebase is crucial to enable containers to withstand internal pressures asexposed to carbonated drinks or temperature increases for example. Aknown challenge for bottle base is thereby to avoid a pop-out of thebase centre at high pressures or temperatures because the bottle willconsequently no longer be able to stand on the base.

The use of PET for making bottle using stretch blow molding processlimits the possibility of bottle base design due to the physical andchemical properties of PET.

For example, in the case of carbonated products, to withstand theinternal pressure due to the carbonation, the base center is designed tobe higher than the base feet. However, the height difference between thebase center and its feet is limited by the stretchability of PET due toits elongation at break and the strain hardening effect which preventsthe PET from being further stretched.

The use of other thermoplastic polymers may help shifting these limits.

A promising polymer discovered in the fifties has recently come back tointerest. PolyEthylene Furanoate and its co-polymers (hereinafterreferred to collectively as “PEF”) is a polymer that can be at leastpartially biosourced.

PEF is a polymer prepared by esterification of the2,5-furandicarboxylate moiety [2,5-Furandicarboxylic acid (FDCA) ordimethyl-2,5-furandicarboxylate (DMF)] and condensation of the esterwith a diol or polyol (ethylene glycol, 1,3-propanediol, 1,4-butanediol,1,4-cyclohexanedimethanol, 1,6-hexanediol, 2,2-dimethyl-1,3-propanediol,poly(ethylene glycol), poly(tetrahydrofuran), glycerol,pentaerythritol). Some of these acid and alcohol moieties can beobtained from renewable crop raw material.

One proposed PEF is a polymer of at least one FuranDiCarboxylic Acid(FDCA) monomer, preferably 2,5-FuranDiCarboxylic Acid (2,5-FDCA)monomer, and at least one diol monomer, preferably monoethylene glycol(MEG) monomer.

Document WO 2010/077133 A1 describes an optimized processes for making aPEF polymer having a 2,5-furandicarboxylate moiety within the polymerbackbone.

The preparation of a PEF polymer for bottle application is alsopresented in document EP 2 890 544 A1.

In addition to being possibly obtained from renewable raw material andto having similar if not better mechanical and thermal properties, PEFhas superior barrier properties than PET (O2 barrier: 10× improvement,H2O barrier: 2× improvement, CO2 barrier: 4× improvement) and isrecyclable.

Additionally, PEF has a crystallization time that it 10 times longerthan the one of PET and the crystallization occurs at higher temperature(130 to 150° C. for PEF instead of 100 to 120° C. for PET).

In this frame, the use of PEF has been explored.

It has been disclosed that some bottles made of PEF have been made. Saidbottles are however believed to be quite basic in some of theirstructural parameters. There is a need for advanced bottles.

It is therefore an object of the present invention to propose a bottle,and associated method, made from PEF polymer with improved structuralparameters.

SUMMARY OF THE INVENTION

The Bottle

In this respects, the invention provides a bottle molded from at leastone thermoplastic polymer of at least one Furan Dicarboxylic Acid (FDCA)monomer, preferably 2,5-Furan Dicarboxylic Acid (2,5-FDCA) monomer, andat least one diol monomer, preferably Monoethyleneglycol (MEG) monomer,said bottle, having a main longitudinal axis, being provided with a bodyand a bottom base extending from a lower end of the body, the bottombase comprising a peripheral seat defining a laying plane; a concavearch which extends from the periphery of a central zone of the bottombase to the peripheral seat, said concave arch having a rounded generalshape with a concavity turned towards the outside of the container andthe middle point of the central zone being named push-up; a series ofreinforcing grooves which extend radially from the central zone to atleast the peripheral seat; base feet located between two adjacentreinforcing grooves, and presenting the features of claim 1.

Specifically, the proposed bottle comprises a sitting radius, defined asthe distance between the contact point of the base feet with the layingplan and the axis of the bottle. In the context of this patentapplication an additional parameter is defined. This parameter is named“offset sitting radius”. It is defined as the distance between themaximum bottle diameter and the contact point of the base feet with thelaying plan, in the range of 5 to 10 mm for a bottle having a diameter(D) between 40 and 150 mm.

When looking at the offset seating radius, the smaller the offsetseating radius is, the more the base feet are apart, leading to a higherstability of the bottle.

The thermoplastic polymer made of FDCA and diol monomers, such aspolyethylene furanoate (PEF), has been surprisingly found to allow animproved blowability of the base of the bottle compared to PET. Inparticular, the thermoplastic polymer of the invention showed anenhanced ability to follow a base profile of a mold thereby making itpossible to get some smaller and more precise features onto the bottlebase. Without intending to be bound to any theory, it is believed thatdue to its flow and regularity features, PET limits the kind of imprintsthat can be molded, especially for bottle base parameters of smalldimensions.

Thanks to these newly proposed technical features of the proposed bottlebase it makes it possible to improve stability angle of the bottle whileallowing a great number of design for the other parameters of the bottombase (number of feet, reinforcing grooves profile . . . ).

The stability angle of a bottle is defined as the angle between the axisof the bottle and a line connecting the centre of gravity of the filledbottle with the line between the external ground contact points of twoadjacent feet. After the bottle has reached it stability angle, itfalls.

It is important to know the stability angle of a given bottle,especially for production purpose where during transportation in theproduction process, the bottle may be tilted due to centrifugal forces,for example.

For a bottle, having a small offset sitting radius of the feet allowsincreasing the stability angle of the bottle compared to a standardoffset sitting radius and therewith to avoid overflow of the bottleduring transportation on the production line for example. Indeed, as thestability angle is increased, the bottle allows a certain tiltingwithout the risk to fall. This parameter improves the quality of thebase and diminish waste for quality issue.

In addition, thanks to the claimed range of offset sitting radiusvalues, the proposed bottle withstands a certain tilt vis-à-vis thevertical axis that is higher than the ones that conventional bottles(made of PET) may withstand. Indeed, the proposed bottle has a stabilityangle of about 17° whereas the stability angle for a conventional PETbottle is between 10.5 to 13° maximum.

According to an additional feature, the number of reinforcing groovesmay vary from 5 to 10, preferably from 7 to 10. It is to be noted that ahigh number of reinforcing grooves also participates in increasing thestability angle and therefore the stability of the bottle.

This allows further improving the quality of the bottle, especially fora pressurized bottle.

Advantageously, the reinforcing grooves have a groove radius comprisedwithin the range from 1 mm to 6 mm, preferably between 1 mm to 3 mm.

The groove radius is defined as the radius of groove in the bottom ofthe groove. The proposed base has a groove radius that may be smallerthan conventional ones used in PET thermoplastic bottle base while stillallowing good blowability thanks to use of PEF.

The proposed bottle further comprises from 5 to 10 base feet, preferablyfrom 7 to 10 base feet.

The base feet have a radius at their contact point with the laying planthat is from 1 to 8 mm, preferably between 1 to 5 mm.

This base feet radius is the radius of the base feet at the groundcontact. The base feet radius is smaller than conventional base feetradii of PET thermoplastic bottle bases and thus it is possible toimprove the stability angle of the bottle as the feet standing ringdiameter is increased.

The proposed bottle has preferably an internal volume between 15 to 350cl with classical bottle shape. Indeed, containers with higher volumesmay have different features for their base and are more difficult tohandle.

According to a particular feature, the claimed bottle with proposedbottle base is filled with a pressurized liquid, preferably a beverage.

For instance, said beverage is a carbonated beverage. Alternatively, thebeverage may also be a beverage under nitrogen atmosphere.

The beverage that is filled in the bottles may be, for example,carbonated water. The beverage may also be an alcoholic beverage such asbeer. The beverage may also be a soda, for example, a cola beverage,preferably carbonated. The beverage may be a fruit juice, under nitrogenatmosphere. The beverage may be a pressurized vitamin water or energydrink or any other pressurized beverage.

The newly proposed base allows improving the stability (through thestability angle) during manufacturing, processing and storage whilehaving good processability in term of blow-molding.

Indeed, the ability of the thermoplastic polymer of the invention tofollow the internal profile of the mold further makes it possible tolower the blowing pressure needed at the blow molding step

The improved geometrical structure of the proposed bottle also allowsthe reduction of the preform weight. Pressurized beveragesconventionally use a high preform weight due to the following tworeasons:

-   -   A higher wall thickness increases the barrier properties of the        bottle and makes sure the intended pressure remains active for a        desired period of time;    -   A higher base weight increases the pressure resistance and        participate in increased stability.

PEF inherently provides superior barrier properties than PET and thusthe remaining weight reduction constraint is the pressure resistancerequirement. However, the proposed bottle provides significantly higherpressure resistance properties and stability at the same weight whichenables a preform weight reduction of up to 30% compared to standardpressurized PET bottle shapes.

The Method for Manufacturing the Bottle

The invention also proposes a method of making a bottle as previouslydefined according to claim 9.

Said method comprises the steps of:

-   -   providing a preform made of at least one thermoplastic polymer        of at least one Furan Dicarboxylic Acid (FDCA) monomer,        preferably 2,5-Furan Dicarboxylic Acid (2,5-FDCA) monomer, and        at least one diol monomer, preferably Monoethylene glycol (MEG)        monomer;    -   placing the preform in a mold having a cavity comprising at        least one imprinting member;    -   blowing the preform in the mold to form the bottle comprising a        push-up having an offset sitting radius, in the range of 5 to 10        mm for a bottle having a diameter (D) between 40 and 150 mm.

Additionally the method comprises the step of providing a preform. Thepreform comprises a hollow tube extending along a longitudinal axis andhaving a closed bottom end and an opened top end, the step of blowingthe preform comprising blowing the preform through the opened top end ata blowing pressure less than or equal to 35 bars, preferably 30 bars,more preferably 25 bars, more preferably 20 bars, more preferably 15bars, more preferably 10 bars.

A further step comprising filling the bottle with a liquid, preferably abeverage is proposed.

As mentioned, the bottle may be filled with a pressurized liquid,preferably a beverage. Said beverage may be a carbonated beverage.Alternatively, the beverage may also be a beverage under nitrogenatmosphere.

The beverage can be of any type, for example carbonated water,carbonated soft drinks, flavored water or fruit juice under nitrogenatmosphere . . .

Use of the Proposed Bottle

The invention also relates to the use of at least one thermoplasticpolymer of at least one Furan Dicarboxylic Acid (FDCA) monomer,preferably 2,5-Furan Dicarboxylic Acid (2,5-FDCA) monomer, and at leastone diol monomers, preferably Monoethylene glycol (MEG) monomer, in abottle as previously defined.

The beverage that can be filled in the bottles can be for examplecarbonated water. The beverage can be an alcoholic beverage such asbier. The beverage can also be a soda for example a cola beverage,preferably carbonated. The beverage can be a fruit juice, under nitrogenatmosphere. The beverage can be a pressurized vitamin water or energydrink or any other pressurized beverage.

The Polymer Constituting the Bottle: Structure-Preparation

The polymer comprises moieties corresponding to a FDCA monomer,preferably 2,5-FDCA, and moieties corresponding to a diol monomer,preferably a monoethylene glycol. The polymer is typically obtained bypolymerizing monomers providing such moieties in the polymer. To thatend one can use as monomers FDCA, preferably 2,5-FDCA or a diesterthereof. Thus the polymerization can be an esterification or atransesterification, both being also referred to as (poly)condensationreactions. One preferably uses dimethyl-2,5-furandicarboxylate (DMF) asa monomer.

In the preferred embodiment the diol is EthyleneGlycol (MonoEthyleneGlycol—MEG), preferably biosourced. For example biosourced MEG can beobtained from ethanol which can also be prepared by fermentation fromsugars, (e.g. glucose, fructose, xylose) that can be obtained from cropor agricultural by-products, forestry byproducts or solid municipalwaste by hydrolysis of starch, cellulose, or hemicellulose.Alternatively, biosourced MEG can be obtained from glycerol, that itselfcan be obtained as waste from biodiesel.

According to a preferred embodiment of the invention, the polymer is aPEF material using biosourced 2,5-FDCA and biosourced MonoEthyleneGlycol. Indeed, 2,5-FDCA comes from 5-hydroxymethylfurfural (5-HMF)which is produced from glucose or fructose (obtained from renewableressources). MonoEthylene Glycol can be obtained from ethanol which canalso be prepared by fermentation from sugars, (e.g. glucose, fructose,xylose) that can be obtained from crop or agricultural by-products,forestry by-products or solid municipal waste by hydrolysis of starch,cellulose, or hemicellulose. Alternatively, MonoEthylene Glycol can beobtained from glycerol, that itself can be obtained as waste frombiodiesel.

This is referred to as a 100% biobased or biosourced PEF as most of themonomers used are considered as biosourced. As some co-monomers and/orsome additives, and/or some impurities and/or some atoms might not bebiosourced, the actual amount of biosourced material can be lower than100%, for example between 75% and 99% by weight, preferably from 85 to95%. PEF can be prepared according to the public state of the art inmaking PEF.

Bottles may be made with such a material for example by Injection BlowMolding (IBM) processes, preferably by Injection Stretch Blow Molding(ISBM) processes. Such bottle can have similar properties thanpreviously publicly described with PEF wherein 2,5-FDCA or MonoEthyleneGlycol are not biosourced.

Such properties, including mechanical properties are improved comparedto PET.

As mentioned, the term “polymer” according to the present inventionencompasses homopolymers and copolymers, such as random or blockcopolymers.

BRIEF DESCRIPTION OF THE DRAWINGS

The invention is further described with reference to the followingexamples. It will be appreciated that the invention as claimed is notintended to be limited in any way by these examples.

Embodiments of the present invention will now be described, by way ofexamples, with reference to the accompanying figures in which:

FIG. 1 is a general view of a bottle made of PEF comprising a bottombase;

FIGS. 2 a to 2 d present perspective, bottom, cross-sectional and secondperspective views of the proposed base according to a first embodimentof the invention;

FIGS. 3 a and 3 b present bottom and perspective views of the proposedbase according to a second embodiment of the invention.

DETAILED DESCRIPTION

As used in this specification, the words “comprises”, “comprising”, andsimilar words, are not to be interpreted in an exclusive or exhaustivesense. In other words, they are intended to mean including, but notlimited to.

Any reference to prior art documents in this specification is not to beconsidered as an admission that such prior art is widely known or formspart of the common general knowledge in the field.

On the Figures, the same reference numbers refer to the same or similarelements.

FIG. 1 shows a general view of a bottle 1, produced by Injection StretchBlow-Molding of a preform made of PEF thermoplastic polymer.

Said bottle 1 comprises, at an upper end, a neck 2, provided with amouth 3. In the extension of the neck 2, the bottle 1 comprises in itsupper part a shoulder 4 that widens out in the direction opposite to theneck 2, said shoulder 4 being extended by a lateral wall or body 5, of ashape generally cylindrical in revolution around a main axis X of thebottle 1.

The bottle 1 further comprises a bottom 6 which extends, opposite theneck 2, from a lower end of the body 5. The bottom 6 comprises aperipheral seat 7 in the form of an annular ridge which extendssubstantially axially in the extension of the body 5. The seat 7terminates in a laying plan 8 (also called seating plan) perpendicularto the axis X of the bottle 1, said seating plan 8 defining the lowerend of the bottle 1 and enabling it to be seated upright on a flatsurface.

In FIG. 1 , D denotes the diameter of the bottle 1 laying on seatingplan 8, the term “diameter” covering not only the case (illustrated) inwhich the bottle 1 (and thus the bottom 6) has a circular contour, butalso a case in which the bottle 1 would have a polygonal contour (forexample square), in which case the term “diameter” would designate thediameter of the circle in which said polygon is inscribed.

In the proposed embodiments, the diameter D is also the maximum bottlediameter as used in the claims and for the definition of the offsetsitting radius.

In the proposed embodiments the diameter D of the bottle 1 is between 40and 150 mm and correspond to bottles having internal volume between 15and 350 cl.

The bottles covered by the proposed embodiment have the functionalitiesof a bottle and can be handle with one hand. This may not be possiblefor container having higher volumes.

FIG. 2 a to FIG. 2 d present perspective view, bottom view, crosssectional and second perspective views of the bottom base 6 of bottle ofFIG. 1 integrating the features of the invention and according to afirst embodiment of the invention. FIGS. 2 a to 2 d will be describedjointly.

In the present example, the bottle base 6 corresponds to a bottle havinga diameter of 65.5 mm and an internal liquid volume of 50 cl. Bottlesmade of PET with such dimensions of diameter and volume are commonlyfound.

The bottom base 6 comprises from its peripheral part 7 to its center:the peripheral seat 7, already described, a concave arch 10, a centralzone 11 and in the middle of the central zone a point called push-up 11a. The push-up 11 a comprises an amorphous pellet (not referenced on thedrawings)resulting from the formation of the preform (injection ofplastic material for forming the preform).

The concave arch 10 has a rounded general shape. It is in the form of asubstantially spherical dome with the concavity turned towards theexterior of the container 1 in the absence of stress, i.e. in theabsence of contents in the container 1. The arch 10 extends from theseat 7, to the push-up 11 a of the bottom 6 forming a boss projectingtowards the interior of the container 1.

As can be seen in the figures, the bottom base 6 further comprises aseries of reinforcing grooves 13. Said reinforcing grooves 13 are hollowtowards the interior of the container 1 and extend radially from thecentral zone 11 to at least the peripheral seat 7. According to apreferred embodiment, illustrated in the figures, the reinforcinggrooves 13 extend beyond the seat 7, rising laterally over a lower partof the body 5 of the container 1.

In other words, the principal grooves 13 extend radially over the entirearch 10, over the peripheral seat 7 and part of the body 5. It willtherefore be understood that the seating plan 8 is discontinuous becauseit is interrupted at each principal groove 13.

There are 5 reinforcing grooves 13 in the presented bottom base.

The reinforcing grooves have a groove radius GR, defined as the radiusof the groove in the bottom of said groove that is 3.7 mm.

The proposed base has a groove radius that is a bit smaller thanconventional ones used in PET thermoplastic bottle base while stillallowing good blowability.

Furthermore, the grooves have a groove angle of 60°, this angle is theopening angle of reinforcing grooves 13.

Base feet 14 are located between two adjacent reinforcing grooves 13.Hence in the present embodiment shown in FIGS. 2 a to 2 d , there are 7reinforcing grooves and 7 base feet.

The radius of the base feet 14 at the location of the laying plan 8 isof 5 mm.

Thanks to this low value of base feet radius, compared to conventionalPET bottom base (6 to 8 mm), the base surface is minimized whichcontributes to a good blowability of the base.

According to the invention, the proposed base has an offset sittingradius of 5.1 mm.

As already mentioned, the offset sitting radius is defined as thedistance between the maximum bottle diameter and the contact point ofthe base feet with the laying plan.

The offset sitting radius participates to the stability of the bottlewhich is defined as the angle between the axis of the bottle and a lineconnecting the centre of gravity of the filled bottle with the linebetween the external ground contact points of two adjacent feet.

In the present case, the value of the offset sitting radius is small (incomparison with the conventional values of offset sitting radius of PETbottle basis which are between 9 and 13 mm) which allows increasing thestability angle of the bottle compared to a standard PET bottles.

In the proposed embodiment, the stability angle is of 17° which is 30%higher than for PET bases for which stability angle is between 10.5 and13°.

The improved stability of the bottle allows avoiding overflow of thebottle during transport on the production line or during supply chain.

When looking at the offset seating radius, the smaller the offsetseating radius is, the more the base feet are apart, leading to a higherstability of the bottle.

Both the number of reinforcing grooves 13 and the number of base feet 14have an influence on stability and on the pressure resistance. Thehigher the number of reinforcing grooves and base feet is, the betterthe stability and the pressure resistance are.

The distance of the push-up 11 a with respect to the laying plan 8 isdefined as push-up height PUH visible in FIG. 2 c . The push-up heighthas a high influence on the pressure resistance of the bottom base. Inthe proposed embodiment presented in FIGS. 2 a to 2 d , the push-upheight is of 7 mm.

In the case of bottom base made from PEF polymer, it is possible toproduce bottom bases having higher push-up height than with conventionalPET bottom base.

The properties of the bottom base are then increased in what concernsstability and pressure resistance with regards to conventional PETbottom base.

In addition, the central zone 11 has the function of participating to abetter repartition of the plastic material in the bottom base during thebi-orientation step of the injection stretch blow molding process.

The use of PEF polymer for bottles and bottle bottom base allowsincreasing the offset sitting radius and the number of reinforcinggrooves and base feet which increase the stability and pressureresistance of the base while still allowing good blowability of the basethanks to low base feet radius and low groove radius.

Hence, as mentioned, the proposed bottle has improved technical featuresover bottles of the prior art.

The proposed bottle can be filled with any type of pressurized liquid,especially beverage, whatever the pressure is within the range of 0.2bar to 15 bar.

In the proposed base, the stability angle is increased by 30% incomparison to base having high pressure resistance made of PET.

As a summary, the proposed bottom base has the following features!

Offset sitting radius 5.1 mm Number of reinforcing grooves 5 Push-upheight 7 mm Groove radius 3.7 mm Groove angle 60°  Number of base feet 7Base feet radius 5 mm

FIGS. 3 a and 3 b show bottom and perspective views of a bottom base 6of a bottle according to a second embodiment of the invention.

In this embodiment, the proposed base has the following features.

Offset sitting radius 10 mm Number of reinforcing grooves 8 Push-upheight 7 mm Groove radius 2 mm Groove angle 45°  Number of base feet 8Base feet radius 5 mm

The base of FIGS. 3 a and 3 b is made from PEF and has an offset sittingradius of 10 mm. A quite high number of reinforcing grooves and basefeet counterbalances the value of the offset sitting radius and thusstill allows improving the stability of the base while still allowingthe PEF polymers to flow into and correctly forms the reinforcinggrooves 13.

A bottle base with the above proposed technical features cannot beobtained or at least industrialized using conventional PET.

All the defined and proposed parameters for bottom base of the bottle ofthe invention are interlinked.

The proposed bottles and bottle bottom bases are blown from preforms(not represented).

Such preforms comprise a hollow tube extending along a longitudinal axisand having a closed bottom end and an opened top end. These preformsdesigns are well known to the skilled person in the art.

The forming of a bottle comprises the step of blowing the preformcomprising heating the preform at a temperature above its Tg (glasstransition temperature), placing the preform in a mold, stretching thepreform using a stretch road and blowing the preform using anincompressible fluid through the opened top end at a blowing pressureless than or equal to 35 bars, preferably 30 bars, more preferably 25bars, more preferably 20 bars, more preferably 15 bars, more preferably10 bars.

The preforms used for making the bottles of the invention are made ofPEF made from FDCA and diol monomers.

Although the invention has been described by way of example, it shouldbe appreciated that variations and modifications may be made withoutdeparting from the scope of the invention as defined in the claims.Furthermore, where known equivalents exist to specific features, suchequivalents are incorporated as if specifically referred in thisspecification.

The invention claimed is:
 1. A bottle molded from at least onethermoplastic polymer of at least one Furan Dicarboxylic Acid (FDCA)monomer, and at least one diol monomer, the bottle, having a main axis,being provided with a body and a bottom base extending from a lower endof the body, the bottom base comprising: a peripheral seat defining alaying plane; a concave arch which extends from the periphery of acentral zone of the bottom base to the peripheral seat, the concave archhaving a rounded general shape with a concavity turned towards theoutside of the container and the middle point of the central zone beingnamed push up; a series of reinforcing grooves which extend radiallyfrom the central zone to at least the peripheral seat; base feet locatedbetween two adjacent reinforcing grooves; and the bottle bottom basecomprises an offset sitting radius, defined as the distance between themaximum bottle diameter and the contact point of the base feet with thelaying plan, in the range of 5 to 10 mm for a bottle having a diameterbetween 40 and 150 mm.
 2. A bottle according to claim 1 comprising anumber of reinforcing grooves from 5 to
 10. 3. A bottle according toclaim 1, in which the reinforcing grooves have a groove radius comprisedwithin the range from 1 to 6 mm.
 4. A bottle according to claim 1,comprising from 5 to 10 base feet.
 5. A bottle according to claim 1, inwhich the radius of the base feet at their contact point with the layingplan is from 1 to 8 mm.
 6. A bottle according to claim 1, having aninternal volume between 15 to 350 cl.
 7. A bottle according to claim 1,being filled with a pressurized liquid.
 8. A bottle according to claim7, in which the beverage is a carbonated beverage or a beverage bottledunder nitrogen atmosphere.
 9. A method of making a bottle, comprisingthe steps of: providing a preform made of at least one thermoplasticpolymer of at least one Furan Dicarboxylic Acid (FDCA) monomer, and atleast one diol monomer; placing the preform in a mold having a cavitycomprising at least one imprinting member; and blowing the preform inthe mold to form the bottle comprising an offset sitting radius, in therange of 5 to 10 mm for a bottle having a diameter between 40 and 150mm.
 10. A method according to claim 9, wherein at the step of providinga preform, the preform comprises a hollow tube extending along alongitudinal axis and having a closed bottom end and an opened top end,the step of blowing the preform comprising blowing the preform throughthe opened top end at a blowing pressure less than or equal to 35 bars.11. A method according to claim 9, further comprising a step of fillingthe bottle with a liquid.